Table 1.

Demographic and hemodynamic characteristics of the incident and prevalent PAH cohorts.

	Incident PAH before therapy (n = 32)	Incident PAH after 3 months of therapy	Prevalent mild PAH (n = 11)	Prevalent severe PAH (n = 10)
Age (years)	57 ± 13		67 ± 15	56 ± 10*
Sex (F/M)	26/6		8/3	4/6
Heart rate (bpm)	82 ± 11	86 ± 12	70 ± 7	88 ± 14*
mPAP (mmHg)	58 ± 11	49 ± 9†	30 ± 3	61 ± 7*
PCWP (mmHg)	10 ± 4	8 ± 4†	9 ± 4	14 ± 6
Cardiac output (L/min)	4.2 ± 1.1	5.4 ± 1.7†	5.9 ± 1.3	6.2 ± 1.2
PVR (mmHg/L/min)	12.6 ± 4.3	8.5 ± 3.6†	3.8 ± 1.4	8.2 ± 2.0*
RAP (mmHg)	13 ± 6	7 ± 4†	5 ± 3	15 ± 8*
PA saturation (%)	60 ± 9	65 ± 6†	70 ± 6	64 ± 7

^*P < 0.05 vs. prevalent mild PAH.

^†P < 0.05 vs. incident PAH before therapy.

mPAP, mean pulmonary arterial pressure; PCWP, pulmonary capillary wedge pressure; RAP, right atrial pressure.